| 摘要 |
<P>PROBLEM TO BE SOLVED: To supply a desired voltage by suppressing the effect of variation in the threshold voltage of a transistor. <P>SOLUTION: A semiconductor device is provided which cancels variation in threshold voltage or variation in gate-source voltage between transistors by acquiring, holding and adding to a signal potential input thereafter a voltage corresponding to the gate-source voltage or the threshold voltage of a transistor inputting an analog signal and a transistor including a function as a constant current source. For acquiring and holding the voltage corresponding to the gate-source voltage or to the threshold voltage, switches provided between the gate and the source and between the gate and the drain of the transistor and a capacitor provided between the gate and source are used. <P>COPYRIGHT: (C)2009,JPO&INPIT |
